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M7.2 earthquake, Peru, 1997-10-28

MagnitudeM7.2mwc

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Depth112 km

Time (UTC)1997-10-28 06:15

Rank in 19977 / 136among M6+

Rank since 1900957 / 14,458

Energy vs an M6×63approx.

51 km N of Barranca, Peru · -4.37, -76.68

M6.5+ within 300 km (largest first)

2019 M8.0M8.0

2005 M7.5M7.5

1906 M7.5M7.5

2019 M7.5M7.5

2021 M7.5M7.5

1971 M7.4M7.4

1928 M7.3M7.3

1997 M7.2M7.2

1991 M7.1M7.1

1928 M7.1M7.1

1983 M7.0M7.0

1995 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.5 1995-10-03	1995-10-03 12:44	17 km	50 km SE of Sucúa, Ecuador
M7.0 1995-10-03	1995-10-03 01:51	24 km	45 km SE of Sucúa, Ecuador
M6.7 1995-05-02	1995-05-02 06:06	97 km	64 km WSW of Alianza Cristiana, Peru
M6.3 1992-07-13	1992-07-13 18:11	96 km	52 km SSW of Alianza Cristiana, Peru
M7.1 1991-04-05	1991-04-05 04:19	20 km	11 km NE of Rioja, Peru
M6.5 1991-04-04	1991-04-04 15:23	21 km	4 km ENE of Rioja, Peru
M6.6 1990-05-30	1990-05-30 02:34	24 km	6 km ESE of Segunda Jerusalén - Azunguillo, Peru
M6.8 1986-11-23	1986-11-23 01:39	106 km	109 km W of Alianza Cristiana, Peru
M7.0 1983-04-12	1983-04-12 12:07	104 km	92 km NNE of La Peca, Peru
M6.6 1982-11-18	1982-11-18 14:57	195 km	122 km SSE of Boca Suno, Ecuador

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.